Chapter 2 – Testing Throughout the SDLC
Confirmation Testing – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
Testing performed on a fixed defect to confirm that the failure caused by that defect no longer occurs.
In simple words
Also called re-testing — you rerun the exact steps that reproduced the bug to prove the fix works.
Exam tip
Confirmation testing verifies the fix; regression testing checks nothing else broke because of it.
Related terms
- Regression TestingAfter any change — bug fix, new feature, config update — you re-run existing tests to make sure nothing that used to work has broken.
- Change-Related TestingUmbrella term for confirmation and regression testing — anything you run because something changed.
- DefectA flaw in the product — code, requirement, or design — that could cause a failure when executed.
Practice this term in the ISTQB Mock Test
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